What is a heat pump?
In its most basic form, a heat pump acts very much like a refrigerator. When it's cold outside, a heat pump pulls exterior heat inside. When it's warm outside, it reverses directions and acts like an air conditioner, removing heat from your home. A compressor circulates refrigerant that absorbs and releases heat as it travels between the indoor and outdoor units. The indoor unit is called an air handler and the outdoor unit is very similar to a central air conditioner, but is called a heat pump.
